Finding the Fourth Proportional to 90,229.75, 124,515.09 and 49,941.09
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Solution
The fourth proportional to 90,229.75, 124,515.09 and 49,941.09 is: 68,917.62
Step by Step Solution
- Step 1: Write the proportion equation
90,229.75 : 124,515.09 = 49,941.09 : x - Step 2: Convert to fraction form
90,229.75/124,515.09 = 49,941.09/x - Step 3: Cross multiply
90,229.75x = 124,515.09 × 49,941.09 - Step 4: Simplify right side
90,229.75x = 6,218,419,316.05 - Step 5: Solve for x
x = 6,218,419,316.05/90,229.75 - Step 6: Final answer
x = 68,917.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.